A substance has a density of 13.5 g/cm3. What is the volume of a 50 g block of this substance?

How would you describe the sequence of reactions in a hydrogen bomb? A) A fission reaction is used to trigger a fusion reaction. B) A fusion reaction is used to trigger a fission reaction.

What are some resources used to generate electricity in energy stations?

Which of the following will increase the force of gravity between two charged objects without affecting the electric force? A. Increasing the distance between the objects B. Increasing the charge of both objects C.

Velocity of sound waves in space is 340 m/s true or false?

The top of a 20-foot ladder leans against a wall, and the bottom of the ladder slides away from the wall at a rate of 5 ft/sec.

If the power developed in an electric circuit is doubled the energy used in one second is

A substance has a density of 13.5 g/cm3. What is the volume of a 50 g block of this substance?

Select all of the answers that apply. Which statements are true regarding the scientific evidence supporting the big bang theory? Researchers found cosmic microwave background radiation, which is a heat imprint left over from the big bang.

How are magnetic poles and electrical charges similar? A. Their same forces repel each other, and their opposite forces attract each other. B. Their same forces attract each other, and their opposite forces repel each other. C.

As part of his meal, a workman has a cup containing a hot drink. In order to keep the drink hot whilst he eats the rest of his meal, he covers the cup, as shown in the figure. Which sources of energy loss does this action reduce? Tick two boxes.